Greenhouse watering

What is the target humidity. Many of these only go to 60% max.

 

What I want to avoid is big swings in RH. I'm trying to keep my smaller greenhouse at 70-80% but this time of year is the most challenging from a heat standpoint as well as humidity. Today out temperature is about 86F and the humidity is about 20%. This seems to happen every spring before I get leaves on the trees which cools me down and also raises the humidity. I have had to mist every 15 minutes to keep the humidity up and the temperature below 80.

We went from winter to summer but hopefully the temperature will cool down over the week end. I like it hot but I want leaves first.

 

Same here but I won't get all that much cooling affect here as the normal RH is about 60% in the summer.

 

Boy ... there's an understatement. Mine's 9x12 also & I seem to be able to control temperature reasonably well (so far at least - we'll see what happens in August) but humidity control's a bitch. Just when I think I've got it dialed in the house heats & the exhaust fans push all my hard-earned humidity outside.

 

To add humidity check out:
www.hydrofogger.com

I did a lot of research before I bought a humidifier and this one looked the best.

I have no affiliation with Hydrofogger.

Just a great product.

I've been ecstatic with the performance. The droplets are about 20 microns in diameter... 0.020 millimeters very small and the fog is very buoyant just like real fog. I bought the larger one with the humidistat and it works like a charm! Keeps the RH with in the set range, even with the exhaust fans kicking on it manages to bring the humidity back up quite fast.
They are extremely easy to set up and attaches to the waterline with an ice-maker sized flexible tubing (1/4" if I remember right). It took me just a few minutes to hook it up and had it running in just a few minutes out of the box.
I have a small 25 x 30' GH and it works excellent, the larger one (the one I bought) is good for up to 2000 square feet.
AHAB
PS
Even though I live in Central Florida, the humidity gets low over the winter, my Paphs and Bulbo's are doing much better this time around. I keep the RH around 70 to 80%.

 

I replaced my Hydrofogger with an Aquafog 700 from Jaybird Manufacturing, (who used to manufacture Hydrofoggers, but apparently sold the product line).

It was very effective, but over the years of use, my hydrofogger developed cracks in the base/tank, and was prone to break the plastic propeller that blew the atomized water droplets out of the top.

The Aquafog unit is merely a fan into which they feed a small stream of water, and it really "throws" the fog. I have mine connected to my RO supply so I get no spotting on the plants, and the fan an solenoid valve are controlled by a humidistat, but it is possible to only control the water that way, giving you a constantly running fan when it's not humidifying.

One negative though is the sound. The hydrofogger has a relatively gentle "hissing" sound, while the aquafog has a considerably louder, typical fan noise to it.

 

I am not sure how different the Aquafog 700 is from the Aquafog 400, but I had to unplug my Aquafog 400 because no matter where I placed it, it would make a mess making everything in front of it very wet, up to 20 feet in a 30 degrees angle, almost lost plants with that problem. Went back to under bench misting.

 

me holding the hose is the only misting system I have in my 20x22 grnhs. I keep companion plants, like ferns under the benches which I keep very wet. I also have a small fountain under bench which will evaporate a gallon of water a day in the summer. I'am thinking I'll put in a swamp cooler this year, and maybe a injector system for fert. Does anyone have recommendation's

 

The Hydrofogger has a round metal squirrel-cage type fan that (rotates horizontally) whips the water into a very fine fog.

It is literally a 20 micron fog, just like the real fog that occurs in nature.

The fog it produces is very fine/buoyant and the fog air floats in the air-currents.

It does not wet the plants at all, even the plants directly in front of the output.

My test question is always; would I buy the same product again after my experience with it.
Does it fit the need, does it work as advertised, have I seen something that performs better?

For the Hydrofogger I would definitely say yes, I would buy it again!

 

Sounds great Jon!! I bet it takes a big load off knowing you have full control - and from your kitchen no less. Nice project. I would love to see pictures one day... //Sincerely, The Control Freak